The police said that the military truck and a three wheeler had collided causing the accident.
The three wheeler driver and two passengers who were critically wounded in the accident and admitted to the Palai Hospital, but had eventually succumbed to their injuries.
The victims are 36-year-old Perumal Jeyakumar, 32-year-old Gunaratnam Gugadas and 26-year-old Sivapalan Radeeswaran.
The army truck driver has been arrested and is scheduled to be produced before the Kilinochchi Magistrate today.
The Palai Police is conducting further investigations.
(Pics by Madawa Kulasooriya-Vavuniya Corr.)